Actual source code: fpath.c
petsc-3.11.4 2019-09-28
2: #include <petscsys.h>
3: #if defined(PETSC_HAVE_PWD_H)
4: #include <pwd.h>
5: #endif
7: /*@C
8: PetscGetFullPath - Given a filename, returns the fully qualified file name.
10: Not Collective
12: Input Parameters:
13: + path - pathname to qualify
14: . fullpath - pointer to buffer to hold full pathname
15: - flen - size of fullpath
17: Level: developer
19: Concepts: full path
20: Concepts: path^full
22: .seealso: PetscGetRelativePath()
23: @*/
24: PetscErrorCode PetscGetFullPath(const char path[],char fullpath[],size_t flen)
25: {
27: size_t ln;
28: PetscBool flg;
31: if (path[0] == '/') {
32: PetscStrncmp("/tmp_mnt/",path,9,&flg);
33: if (flg) {PetscStrncpy(fullpath,path + 8,flen);}
34: else {PetscStrncpy(fullpath,path,flen);}
35: fullpath[flen-1] = 0;
36: return(0);
37: }
39: PetscStrncpy(fullpath,path,flen);
40: fullpath[flen-1] = 0;
41: /* Remove the various "special" forms (~username/ and ~/) */
42: if (fullpath[0] == '~') {
43: char tmppath[PETSC_MAX_PATH_LEN],*rest;
44: if (fullpath[1] == '/') {
45: PetscGetHomeDirectory(tmppath,PETSC_MAX_PATH_LEN);
46: rest = fullpath + 2;
47: } else {
48: #if defined(PETSC_HAVE_PWD_H)
49: struct passwd *pwde;
50: char *p,*name;
52: /* Find username */
53: name = fullpath + 1;
54: p = name;
55: while (*p && *p != '/') p++;
56: *p = 0;
57: rest = p + 1;
58: pwde = getpwnam(name);
59: if (!pwde) return(0);
61: PetscStrcpy(tmppath,pwde->pw_dir);
62: #else
63: return(0);
64: #endif
65: }
66: PetscStrlen(tmppath,&ln);
67: if (tmppath[ln-1] != '/') {PetscStrcat(tmppath+ln-1,"/");}
68: PetscStrcat(tmppath,rest);
69: PetscStrncpy(fullpath,tmppath,flen);
70: fullpath[flen-1] = 0;
71: } else {
72: PetscGetWorkingDirectory(fullpath,flen);
73: PetscStrlen(fullpath,&ln);
74: PetscStrncpy(fullpath+ln,"/",flen - ln);
75: fullpath[flen-1] = 0;
76: PetscStrlen(fullpath,&ln);
77: if (path[0] == '.' && path[1] == '/') {
78: PetscStrlcat(fullpath,path+2,flen);
79: } else {
80: PetscStrlcat(fullpath,path,flen);
81: }
82: fullpath[flen-1] = 0;
83: }
85: /* Remove the automounter part of the path */
86: PetscStrncmp(fullpath,"/tmp_mnt/",9,&flg);
87: if (flg) {
88: char tmppath[PETSC_MAX_PATH_LEN];
89: PetscStrcpy(tmppath,fullpath + 8);
90: PetscStrcpy(fullpath,tmppath);
91: }
92: /* We could try to handle things like the removal of .. etc */
93: return(0);
94: }